Ophthalmic mounting



.Patented De... 9,1919

i writers@ ML 4 f* WD LCAN W. BUGBEE, GF SGUTIBRIDGE, lvlASsAHUSETT, c lAN G'CAL CMAJWY, OF SUTHBRIDGE, MASSACHU" ASSCTGN OF MASSACHUSETTS.

E2 eeeation et' Letters Patent.

Patented Dec. 9,

Application tiled November l, i917'. Serial No. 199,653.

i To all uffi-om t may concern l own that wo., linear' lil. Sf'rim and rtf. Boemia, citizens ol the United residing 'at Southbridge, in the county of TQi/'orcester and State et .li/lassachusetts, have invented certain new and use ful improvements in Ophthalmic Mountings, of which. the 'following is a speciii'cation.

This invention relates to improvements in ophthalmic mountings and has particular reierence to improved means l'or satisfactorily connecting the metallic parts or ittings of suoli meiuitings to lenses in a Iiii-in and secure manner.

One of the leading objects of the present invention is the provision in connection with a slotted lens oi' novel and improved means for securelyengaging with the slot to prop erly-connect the lens and tting. 4

' A further object of the present invention is the provision of an improved construction of lens clip in which spreading and expansion of the strap ears or lens engaging meinbers is prevented and in which mechanical means are provided within the clip to interlock'with the lens and secure it in place.

A further object of the present invention is the provision of an improved construction of mounting for `use in connection with a slot and cement joint between the mounting and .lens,which will possess the various advantages present in previously known slot and cementfconstructions so far as rigidity of the clip ears and interlocking of the parts is concerned and which will in addition possess certain supplemental mechanical locking devices for securely engaging and connecting thev parts should the cement fail to roperly secure them.V4 ther objects and advantages of .our improved constri'iction should be readily ap# parent by reference to the following specifi- Vcatin taken in connection with the accompanying drawings, and it will be understood that we. may make any modifica-tions iii the specific details of construction, shown' and described Within the scope of the vappended claims without departing from or exceeding the'spiritoi our invention.

Figure l is a front elevation of. a pair of eyeglasses provided with our "improved mounting. l

Fig. ll is an enlarged elevation of one which includes the side ears 5 `securely retain the Fig. V is a view similar to Fig. HI illus-I trati'ng still another forni of the invention.

Fig. V is 'a transverse sectional view through the fastener and lens strap.

Fig. Vl is a sectional view similar to Fig. EV illustrating another form of the invention. l

ln, carrying out our invention we first provide a lens 1 having a slot 2 which eX- tends longitudinally from the edge of the lens and opens into a transverse opening 3 disposed adjacent the edge of the lens and adapted to receive the fastening member carried by the lens strap. The lens strap 4 may be or' a simple construction as shown and provided with a transverse central portion ti having extending inwardly therefrom the spaced parallel spring members 7 the outer ends of which are curved in opposite directions as Shown at 8 so that after passed into the opening the tension of the springs will project the curved portions 8 into the opening 3 and retain the arms or members 7 against withdrawal from tlie opening 3.

It will be apparent from the foregoing that a lens could be quickly and readily attached to a temple side or nose piece by the insertion et' the spring arms 7 into the slot 2 Aand then into the opening 3. In order to spring arms against with drawal from the opening 3 and slot 2 tlxse openings are filled with a cement that will entirely lill the space between the two strap ears 5 and when hardened will positively prevent .any lateral orlongitudinal move- `ment of the members embedded within the cement. v

` In Fig. IH we have illustrated a inodiiedorm of the invention which includes, in addition to the spring arms 7, a transverse movable web 9 the ends of which are rotatably mounted in the strap ears 5 as shown at l0 whereby when the strap is being applied to the lens the web is arranged in a substantially' horizontal plane with respeci tothe straps 5 so that it can ,be readily passed through the slot 2 into the opening 3 withthe spring arms 7. After the web they have been and curved ends 8 of the spring arms are arrangedl in the openings 3 the web is rotated in its bearings 10 until the same is disposed in a substantially transverse position with respect to the arms, the rotation of the web 9 engaging its longitudinal edges with the curved portions of the arms 7 and forcing them apart and retaining them in this position whereby any liability of withdrawal from the opening is entirely eliminated. In order to securely retain the web 9 and arms 7 in their operative positions the opening 3 and slot 2 are filled up with cement so that all space around the web and arms is entirely filled thus retainy ing these members against movement. From this it will be apparent that the'arms 7 will be forced apart into a further open position b v the use of the web 9 so as to positively retain these two members in their operative positions.

In the formation of the lens mount it is preferred to have the arms 7 made from' a single piece of material bent into U shaped form and having its intermediate portion soldered or otherwise secured to the central portion of the strap midway of the two ears 5. The width of these arms is substantially the same as the space between the spect to the ears 5 and the spring arms 7` are pressed together so that they may be readily inserted into the slot 2 and pushed -inwardly until the curved portions 8 reach the opening 3 vwhere the tension of the spring will force these curved portions i-nto the opening. 4 The curved portions are then secured in placei'by turning of the web 9 into a transverse position thus spreading the curved portions apart to retain them within the opening 3 and as the cement hardens the arms and web will be rigidly held in their respective positions. It will be understood however that these arms and web may be readily used without the cement as they will hold the strap in place through the engagement of the curved portions of the arms witlrthe side walls of the opening 3. In Fig. III we have illustrated the mounting part in elevation and part in section showing how the arms 7 will contact with the opening and also with the sharp edge 11 to securely hold the strap on the lens.

In Fig. IV we have illustrated another inname 4modified form of the invention wherein the n l as shown at 12 adapted to receive the longiy tudinal edges of the web 9 when disposed in a transverse position so as to securely'lock the web and arms in the respective positions and retain the strap in engagement with the v lens. It will be noted however that the web can be readily unlocked from between the arms by turning the same against the tension' of the spring arms. From this it will be apparent that as soon as the spring arms are inserted into the opening 3 the web 9 is turned and 'engaged with'the indentations whereby the curved portions will be lsecurely held within the opening 3. y

In Fig. VI, we lhave illustrated another form lof the invention wherein. the spring arms 7 are secured at their intermediate` portions to the inner end of a block 13 which isvcarried by the strap 4. This block may be integrally formed with the strap or of a separate piece and secured to the same in any suitable manner. I'Iowever, this block extends into the recess 2 of the lens and any suitable means may be used to connect the intermediate portion of the.

spring members 7 to the inner end of this block.

The form of construction illustrated in Fig. VI possesses 'a particular advantage which is present, though to a less pronounced degree, in connection with the forms illustrated as well in Figs. II, III and IV, this advantage residing in the fact that by our improved construction the two lens .clip ears 5 are held in predetermined spaced relation, as by the block or portion f13, and are prevented' from either contraction or crushing against the lens or from expansion or spreading away from the lens, this being accomplished in Figs, III to V through the interlocking of the spun over or flared portion 14 and head 10 of the locking member 9, which parts serve to hold the ears against expansion, while the width of the member 9 is such as to prevent their contraction, and being accomplished in Fig. VI in addition by the presence of the solid block 13 between of approximately the size to fit the recess but preferably allowing a slight amount of cethe inner portions of the clip ears, it being i understood that in this event the block 13 isA ment to lit around the block and unite the edges of the slot in the lenses with the block,

while the spring fingers at the outer end y Legnaia p vcementitiously and mechanically securely connecting the lens and itting,l andiprcventing'any accidental loosening or separation of the-parts. l

-We claim:

1. A lens mounting including a lens hav- 'ing a slot extending in fromV its/peripheral I edge and communicating With'an opening in `the lens, a lens strap, a pair of spring arms carried b y the strap for engagement with the'slot and opening, and means carried by the strap for engagement with the arms to force them apart in the opening.

2. A lens mounting including a` lens having a slot extending in from its peripheral edge and communicating with an opening -in. the lens, a lens strap, a pair'of spring 1 `arms .carried by the strap for engagement l termed on the inner ends of said arms for within 'the slot, oppositely curved portions Vengagement within the opening and means carried by the strap for engagement with the curved arms to force them apart in the opening.

3. A lens mounting including a lens hav` ing a slot-extending in 'from its peripheral edge and communicating with an opening in the lens, a lens strap, a pair of arms carried -by the strap for engagement within the slot, oppositely curved portions formed on the inner ends .oi said arms for engagement within the opening, said curved portions having'indentations formed therein and a movable web carried. by the strap and adapted to have its longitudinal edges in en gagement with the indent-ations as and 'for the purpose set `forth.

4. A lens mounting including a lens having a slot extending in from its peripheral edge` and communicating with an opening in the lens, a lens strap, a pair of spring arms carried by vthe strap for: engagement Within the slot and opening, oppositely curved portions formed onthe inner ends of said arms for engagement within the opening and a movable web carried by the straps for engagement with the curved portions to force them apart into engagement with the walls of the opening. p

In testimony whereof we have aiiixed our signatures in presence of two witnesses.

' HARRY H. STYLE.

LUCAN W. BUGBEE. Witnesses:

H. E. COLEMAN, E. M. HALvonsnN. 

